#!/bin/bash
echo 'cat /etc/passwd | sort -t ":" -k 3 -n'
#cat /etc/passwd | sort -t ":" -k 3 -n
echo 'last | cut -d " " -f 1 | sort -u'
last | cut -d " " -f 1 | sort -u

echo ''
echo 'last | cut -d " " -f 1 | sort | uniq -c'
last | cut -d " " -f 1 | sort | uniq -c

echo ''
echo 'last | grep [a-zA-Z] | grep -v "wtmp" | wc -l'
last | grep [a-zA-Z] | grep -v "wtmp" | wc -l
